Portable electronic device with a graphical user interface



The FIGURE is a front-side view of a portable electronic device with a graphical user interface showing our new design.

The colors shown in the figure are disclaimed, and the contrast between features is claimed.

The broken lines shown in the drawings illustrate portions of the portable electronic device that form no part of the claimed design. 

CLAIM We claim the ornamental design for a portable electronic device with a graphical user interface, as shown and described. 